I have had 3 episodes of this since October.
October-lower abdominal pain like gas. Felt I needed to stay near a bathroom for mild diarrhea. Lasted a day or so.
Dec. 26. Stomach upset, same kind of gas-like pain in abdomen. Took a tums for upset stomach and vomited it up. lasted a day or so. Also felt achy and tired. No diarrhea.
Jan. 21. More intense abdominal pain and upset stomach. Vomited mildly about 3 times. No diarrhea. Very very tired. Went to bed at 11:30 am and stayed there (waking every few hours) until 6:00 am the following day. Felt much better (about 95%).
Finally, I want to mention that I eat healthy, lots of fruit and vegetables; I get my fiber and fluids, and I was "proud" :) of my healthy daily stools. In the past few months, I am more constipated like before I started receiving treatment for hypothyroidism. I more often than not have "terds", and tiny ones often slip out during the day without straining; they just pop out.